旬ごとの値
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室蘭（胆振地方) 1966年（旬ごとの値） 詳細（気温・蒸気圧・湿度）
| 月 | 旬 | 気温(℃) | 蒸気圧 (hPa) | 湿度(％) | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 日平均 | 最高気温 | 最低気温 | 各階級の日数（平均） | 各階級の日数（最低） | 各階級の日数（最高） | |||||||||||||||||||
| 平均 | 平均 | 最高 | 最低 | 平均 | 最低 | 最高 | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ≧30℃ | ≧35℃ | 平均 | 平均 | 最小 | |||||||
| 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | |||||||||||||||
| 上旬 | -0.2 | 2.5 | 5.2 | 10* | -0.6 | 01 | -2.3 | -6.6 | 01 | 1.5 | 05 | 6 | 0 | 7 | 0 | 2 | 0 | 0 | 0 | 4.5 | 74 | 48 | 06 | |
| 中旬 | -3.4 | -0.2 | 5.3 | 11 | -9.6 | 19 | -6.2 | -12.7 | 19 | -1.4 | 11 | 8 | 0 | 10 | 0 | 5 | 0 | 0 | 0 | 3.5 | 70 | 41 | 16 | |
| 下旬 | -3.5 | -1.4 | 2.1 | 29 | -4.3 | 27 | -5.7 | -8.1 | 30 | -3.3 | 25 | 11 | 0 | 11 | 0 | 7 | 0 | 0 | 0 | 3.4 | 71 | 52 | 27 | |
| 上旬 | -3.1 | -0.8 | 5.4 | 03 | -6.9 | 05 | -5.8 | -10.5 | 05 | -2.0 | 08 | 7 | 0 | 10 | 0 | 6 | 0 | 0 | 0 | 3.7 | 71 | 54 | 01 | |
| 中旬 | -3.0 | 0.3 | 5.1 | 18 | -5.5 | 14 | -6.3 | -10.0 | 12 | -2.8 | 18 | 7 | 0 | 10 | 0 | 4 | 0 | 0 | 0 | 3.7 | 72 | 50 | 13 | |
| 下旬 | -0.6 | 2.0 | 5.6 | 25 | -2.9 | 23 | -3.4 | -8.0 | 23 | 2.1 | 28 | 3 | 0 | 6 | 0 | 3 | 0 | 0 | 0 | 4.4 | 73 | 45 | 26 | |
| 上旬 | 2.1 | 4.7 | 11.8 | 03 | -2.5 | 06 | -0.4 | -6.1 | 07 | 4.4 | 02 | 3 | 0 | 5 | 0 | 2 | 0 | 0 | 0 | 5.6 | 73 | 41 | 10 | |
| 中旬 | 1.4 | 4.0 | 7.8 | 13 | -0.3 | 20 | -1.1 | -4.3 | 20 | 1.8 | 13 | 2 | 0 | 8 | 0 | 1 | 0 | 0 | 0 | 4.8 | 70 | 43 | 11 | |
| 下旬 | 2.1 | 4.5 | 7.8 | 23 | 1.7 | 30 | -0.2 | -4.6 | 21 | 1.7 | 22 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 5.3 | 75 | 51 | 28 | |
| 上旬 | 3.9 | 6.6 | 9.4 | 08 | 1.5 | 04 | 1.1 | -3.0 | 04 | 4.0 | 07 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 5.9 | 71 | 46 | 06 | |
| 中旬 | 4.6 | 7.5 | 10.0 | 20 | 5.0 | 18 | 1.8 | 0.2 | 18 | 4.9 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 71 | 41 | 13 | |
| 下旬 | 6.9 | 9.6 | 13.7 | 21 | 4.3 | 23 | 4.8 | 2.9 | 23 | 7.9 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.4 | 85 | 53 | 27 | |
| 上旬 | 8.3 | 11.1 | 16.0 | 07 | 8.4 | 04 | 5.7 | 3.8 | 05* | 7.7 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 75 | 38 | 07 | |
| 中旬 | 10.8 | 14.5 | 25.1 | 20 | 7.8 | 14 | 7.3 | 4.9 | 17 | 14.1 | 19 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 8.5 | 69 | 21 | 20 | |
| 下旬 | 12.8 | 16.4 | 21.7 | 27 | 10.2 | 22 | 9.7 | 6.6 | 22 | 14.5 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.1 | 70 | 32 | 28* | |
| 上旬 | 10.7 | 13.3 | 17.3 | 07 | 10.5 | 06 | 9.1 | 7.8 | 10* | 11.0 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.2 | 87 | 60 | 01 | |
| 中旬 | 14.1 | 17.8 | 21.9 | 14 | 14.2 | 11 | 11.4 | 7.0 | 11 | 13.5 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.1 | 82 | 40 | 14 | |
| 下旬 | 14.5 | 17.8 | 25.9 | 22 | 13.2 | 25 | 12.2 | 10.4 | 24 | 15.8 | 22 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 14.4 | 87 | 54 | 22 | |
| 上旬 | 13.5 | 16.5 | 21.1 | 07 | 10.8 | 03 | 11.3 | 8.8 | 02 | 13.1 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.8 | 89 | 58 | 01 | |
| 中旬 | 18.4 | 21.6 | 26.7 | 17 | 16.4 | 11 | 15.7 | 13.0 | 12 | 18.8 | 17 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 18.9 | 88 | 51 | 13 | |
| 下旬 | 18.8 | 21.9 | 24.8 | 29 | 16.9 | 30 | 16.3 | 13.6 | 30 | 19.1 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18.7 | 87 | 38 | 23 | |
| 上旬 | 18.3 | 21.6 | 25.5 | 07 | 18.1 | 10 | 16.4 | 13.5 | 03 | 18.5 | 08 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 18.8 | 89 | 65 | 04 | |
| 中旬 | 19.0 | 20.5 | 24.3 | 18 | 16.9 | 15 | 17.6 | 15.5 | 14 | 20.2 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21.3 | 96 | 85 | 18 | |
| 下旬 | 21.7 | 24.5 | 28.6 | 31 | 20.0 | 25 | 19.5 | 16.3 | 25 | 21.7 | 28 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 23.4 | 89 | 65 | 31 | |
| 上旬 | 18.9 | 22.3 | 26.0 | 01 | 20.3 | 07* | 16.0 | 12.4 | 05 | 18.7 | 10 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 17.5 | 79 | 46 | 03 | |
| 中旬 | 16.1 | 19.0 | 21.8 | 13 | 15.8 | 19 | 13.8 | 11.5 | 17 | 16.4 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.5 | 73 | 46 | 16* | |
| 下旬 | 15.4 | 18.1 | 20.3 | 21 | 14.8 | 29 | 12.3 | 10.6 | 23 | 14.1 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.0 | 74 | 52 | 29* | |
| 上旬 | 14.3 | 17.7 | 21.4 | 01 | 11.7 | 05 | 11.3 | 6.4 | 06 | 16.6 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.8 | 76 | 48 | 06 | |
| 中旬 | 14.8 | 16.9 | 19.3 | 17 | 14.4 | 20 | 12.8 | 9.5 | 20 | 14.3 | 15* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13.5 | 80 | 55 | 13 | |
| 下旬 | 12.0 | 14.6 | 17.3 | 28 | 11.9 | 29 | 9.7 | 6.6 | 29 | 11.8 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.5 | 74 | 42 | 30 | |
| 上旬 | 9.5 | 11.9 | 15.0 | 01 | 6.4 | 03 | 6.6 | 3.3 | 02 | 10.3 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.1 | 66 | 43 | 03 | |
| 中旬 | 5.8 | 9.1 | 12.4 | 13 | 3.7 | 15 | 2.1 | -1.6 | 15 | 6.8 | 17 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6.6 | 68 | 45 | 18 | |
| 下旬 | 4.6 | 7.5 | 12.8 | 29 | 1.9 | 21 | 1.4 | -3.3 | 26 | 5.9 | 29 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 6.2 | 70 | 45 | 27 | |
| 上旬 | -0.3 | 2.1 | 5.7 | 04 | -1.3 | 02 | -2.5 | -6.2 | 01 | 1.4 | 05 | 6 | 0 | 8 | 0 | 2 | 0 | 0 | 0 | 4.5 | 72 | 45 | 09 | |
| 中旬 | -1.0 | 1.4 | 4.7 | 19 | -1.6 | 12 | -3.0 | -7.4 | 20 | 0.2 | 15 | 7 | 0 | 9 | 0 | 2 | 0 | 0 | 0 | 4.1 | 69 | 38 | 20 | |
| 下旬 | -3.7 | -2.1 | 0.5 | 27 | -6.0 | 25 | -5.5 | -10.0 | 25 | -2.0 | 31 | 11 | 0 | 11 | 0 | 10 | 0 | 0 | 0 | 3.2 | 68 | 42 | 27 | |